Mega Garchomp

Garchomp-Mega (M) @ Garchompite
Ability: Rough Skin
EVs: 4 Atk / 252 SpA / 252 Spe
Naive Nature
- Earthquake
- Stone Edge
- Fire Blast
- Draco Meteor

Tyranitar (M) @ Smooth Rock
Ability: Sand Stream
EVs: 240 HP / 80 Def / 188 SpD
Careful Nature
- Pursuit
- Stealth Rock
- Stone Edge
- Ice Beam

Tapu Koko @ Choice Scarf
Ability: Electric Surge
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
IVs: 0 Atk
- Thunderbolt
- Volt Switch
- Dazzling Gleam
- Hidden Power [Ice]

Excadrill (M) @ Steelium Z
Ability: Sand Rush
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Earthquake
- Iron Head
- Rock Slide
- Swords Dance

Tangrowth (M) @ Assault Vest
Ability: Regenerator
EVs: 252 HP / 28 Def / 228 SpD
Sassy Nature
- Giga Drain
- Knock Off
- Earthquake
- Hidden Power [Ice]

Tornadus-Therian (M) @ Rocky Helmet
Ability: Regenerator
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Defog
- Hurricane
- Heat Wave
- U-turn